JPS6253899B2 - - Google Patents

Abstract

1. A device for mechanically holding and electrically connecting installation apparatus, such as conduction circuit breakers, earth-leakage circuit breakers, fuses and the like, on or to bus bars (21) which possess an essentially plate-shaped basic body (1) of on an insulating material and which constitutes the carrier of fork-like contacts (3) which can be placed onto the bus bars (21) and are electrically connected to first ends of connecting rails (7) secured to the plate-shaped basic body (1), and at the second ends of which contacts, in the boundary region of the basic body (1), terminal points are arranged for electrical connection to the installation apparatus (25) to be held, characterised in that the plate-shaped basic body (1) and each first end of the connecting rails (7) have a respective recess (2, 8) in the region of the fork-shaped contact (3) which is assigned to this end, which recess is penetrated by two contact pieces forming the fork-shaped contact (3), that a tilting projection (5) is centrally formed on the contact pieces, which tilting projection supports the contact pieces (4) against one another, that adjacent to these tilting projections (5), on the side of the contacts (3) remote from the bus bars (21), there is arranged between the contact pieces a spring (6) which forces apart the contact pieces (4), fixes the contact pieces (4) in the recess (8) of the assigned connecting rail (7), and produces contact pressure to the bus bars (21), and that the plate-shaped basic body (1) is the carrier of at least one profile rail (13) which serves to fix the installation apparatus.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to wiring devices, such as wiring sheath disconnectors,
This is a support device that is installed on the support rail above the busbar for earth leakage, disconnection, fuses, etc., and this support device is electrically insulated from the busbar and has electrical connection to the busbar for each phase. Concerning what a physical connection is formed.

Some support devices of this type are composed of several power distribution busbars connected by insulating members and spaced apart from each other in the direction of the support rail. A bracket is provided on the power distribution bus, and a claw holding bolt is attached to an arm of the bracket that extends horizontally to the power distribution bus. For the electrical connection of wiring devices arranged side by side on the support rail of the mounting device, connection elements are specially connected. Support devices of this type consist of a relatively large number of parts. During assembly, the support device is likely to be installed tilted onto the generatrix. This also applies to the circuit support machine which is hooked to the front of the busbar by means of a hook-shaped protrusion which is provided on the rear connection bracket and which grips the busbar. Nevertheless, such a support device is significantly superior to a support device fixed to the generatrix by means of a batten and two bolts.
With the adapter for fixing the load switch on the busbar, it is possible to easily insert and attach the support device to the busbar. For this purpose, a contact spring is molded and provided at the end of the coupling conductor on the busbar side in a plane perpendicular to the direction in which the busbar extends. For this purpose, the coupling conductor is guided at an angle. In order that such a contact, stamped from a strip, can be sufficiently deflected, it is provided with relatively long fork-like arms, so that the entire support device is constructed relatively tall. Nevertheless, contacts constructed in this way do not have contact forces of the magnitude of about 10 Kgf per contact arm that are actually required.

SUMMARY OF THE INVENTION An object of the present invention is to provide a support device that can be easily and straightly inserted into a busbar, is particularly simple to manufacture and assemble, has a particularly low profile, and can provide sufficient contact force. .

For this purpose, a substantially flat platform made of insulating material has a hole for each phase for a fork-shaped contact, which contact has a mutually supporting pivot point in its center. It consists of two contact pieces, and a spring is inserted between these contact pieces above the swinging fulcrum, and the coupling conductor from this fork-shaped contact part to the edge of the stand is connected at the same time. This is achieved by forming a support for the contact piece and at the edge of this base a coupling conductor is connected with a flexible connection line to the instrument.

Such a support device can be easily plugged into the busbar, and a spring with the desired contact force between the contact pieces can then be inserted at the factory. The wiring fittings to be installed are easily connected to the flexible connecting wires after being mounted on the support rail by means of a snap connection. The flexible connecting wire can be soldered to the coupling conductor and can be covered with a protective tube during connection to the instrument.

When inserting a substantially hairpin-shaped spring between the contact pieces, a particularly low profile is obtained by arranging the dedicated plane of the spring perpendicular to the private plane of the fork-shaped contact part.

If the fork-shaped contact part has an opening slightly narrower than the width of the busbar, and this opening is provided with an inclined surface for insertion of the busbar, the support device can be inserted and attached to the busbar particularly easily.

A simple construction is achieved in that a primarily flat lid made of insulating material supports at least one support rail. The base and the lid can be connected to each other by a plurality of hollow rivets, and a bolt having a busbar holding piece made of an insulating material attached to the end thereof can be inserted through the hollow rivets. When the end of the bolt holding the busbar holding piece is slightly crushed to widen its width, the busbar holding piece is prevented from falling off.

A plurality of contact parts are arranged in a stepped manner on the stand, and a generatrix holding piece of an appropriate length is arranged between the contact parts, and when the holding piece turns the bolt to the left, at least one contact part is It is arranged so that it hits one end surface, and when turned to the right, it hits one side. The contact sections are thus connected to the individual busbars in sequence.
In this way, the contact part or the raised part around the contact part insertion hole of the stand limits the rotation range of each of the generatrix presser pieces, so that when the bolt is turned to the left, it stops at the open position, and when it is turned to the right, it stops at the presser position.

The support rail may consist of a metal band fixed over the seat of the lid and having an upwardly bent edge. The support rail is attached by bolts, and a spacing piece is preferably provided to increase the distance between the seat and the support rail. The support device can thereby be adapted to different construction heights.

If the stand is provided with a fork-shaped attachment made of insulating material, it is easier to attach the support device at right angles to the strike direction of the bus bar.

A detent ring can be provided that substantially fills the gap between the hollow rivet and the bolt. As a result, the busbar holding piece can be prevented from shifting from the open position due to vibration, so that the support device can be reliably and easily attached.

Next, the present invention will be explained in detail based on drawings showing embodiments.

FIG. 1 is a sectional view of a first embodiment of the support device according to the present invention, FIG. 2 is a plan view taken along the cutting line of the support device shown in FIG. 1, and FIG. 3 is a cross-sectional view of the support device according to the present invention. 4 is a side view including a safety switch attached to the support device shown in FIG. 1, FIG. 5 is a plan view of the support device shown in FIG. 1, and FIG. 6 is a sectional view of the second embodiment. A sectional view taken along the cutting line of the support device shown in FIG. 5, FIG. 7 a bottom view of the support device shown in FIG. 5, and FIG. 8 a support rail of the support device shown in FIG. FIG.

In FIG. 1, the support device comprises a primarily flat base 1 made of insulating material, which base has a hole 2 for a fork-shaped contact 3 for each phase. The contact portion 3 is made up of two contact pieces 4 each having a swinging fulcrum 5 at its center that supports each other. A spring 6 is inserted between the contact pieces 4 above the swing fulcrum 5 . A coupling conductor 7 is provided from the fork-shaped contact part 3 to the edge of the base 1, which coupling conductor is provided with a hole forming the support part 8 of the contact piece 4. A flexible connecting wire 9 is connected to the coupling conductor 7 at the edge of the platform 1 .

In the exemplary embodiment shown in FIG. 1, the springs 6 are of substantially hairpin-shaped construction, as can clearly be seen in FIG. 2, in which three springs 6 are shown in the compressed operating state. Since the dedicated plane of the spring 6 is orthogonal to the dedicated plane of the fork-shaped contact part 3, a particularly low profile construction of the support device is obtained.

The fork-shaped contact part 3 is provided with an opening 10 which is slightly narrower than the width of the generatrix to be inserted into it. An insertion inclined surface 11 is provided in the opening.

The support device shown in FIG.
4 supports at least one support rail 13.

The base 1 and the lid 12 are connected to each other by hollow rivets 15, as shown in FIG. A bolt 16 is inserted through each of the hollow rivets 15, and a busbar holding piece 17 made of an insulating material is attached to the end of the bolt. By punching 18 or slightly crushing the bolt end, the busbar holding piece 17 does not fall off. bolt 1
6 can operate its head 19 from the front of the support device. In order to easily attach the support device at right angles to the bus bar 21 shown in FIG. 4, the base 1 is provided with a fork-shaped attachment portion 20 made of an insulating material.
The same applies to FIG. In FIG. 4, the busbars 21 are labeled with symbols N, L1, L2, L3 and PE indicating their types from top to bottom. In order to fill the gap between the hollow rivet 15 and the bolt 16, a locking ring 22 made of, for example, a spring is inserted between them in FIG.

The spring 6 is insulated from the coupling conductor 7 by a bag 23, as shown in FIG. . A particularly low profile and yet safe configuration is thereby obtained.

In FIG. 3, a somewhat taller supporting device is shown, the spring 6 of which is designed as a helical spring inserted between the heads of the contact pieces 4. In this case, the support rail is constructed as a flat metal band, since the platform 14 is also designed to be tall. The flexible connection line 9 to the instrument is here a bendable metal band.

In FIG. 4, a wiring device 25, in this case a safety switch, is mounted and connected on the support rail 13 of a support device of the type shown in FIG. 21 is a bus line.

By means of the bolt head 19 shown in FIG. 5, the generatrix holding piece 17 shown in FIG. 7 can be moved from the open position to the shown holding position perpendicular thereto. In the open position, the bus bar presser piece 17 presses the fork-shaped contact portion 3
When pressing the busbar, the busbar holding piece 17 is rotated 90 degrees until it comes into contact with the side surface 27 of the contact portion 3. In FIG. 7, the stand 1 is provided with three contact parts 3, and between these contact parts a generatrix presser piece 17 of an appropriate length is arranged, and when the presser piece turns the bolt to the left, at least 1
At least one end face 26 of one contact part - in the example shown, it hits one of the two end faces of adjacent contact parts, and when turned to the right it hits the side 27 thereof.

In FIG. 8, the support rail 13 is
It is constructed as a metal band with the edges bent upwards and fixed onto the spacer piece 28 placed above.
For this purpose, the bolt 29 is screwed into the base 14.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a first embodiment of the support device according to the present invention, FIG. 2 is a plan view taken along the cutting line of the support device shown in FIG. 1, and FIG. 3 is a cross-sectional view of the support device according to the present invention. 4 is a side view including a safety switch attached to the support device shown in FIG. 1, FIG. 5 is a plan view of the support device shown in FIG. 1, and FIG. 6 is a sectional view of the second embodiment. 5 is a cross-sectional view of the support device shown in FIG. 5, FIG. 7 is a bottom view of the support device shown in FIG. 5, and FIG. 8 is a support rail of the support device shown in FIG. FIG. In the drawings, 1 is a stand, 2 is a hole, 3 is a contact part, 4 is a contact piece, 5 is a swinging fulcrum, 6 is a spring, 7 is a coupling conductor, 8 is a support part, 9 is a flexible connection piece, 10 1 is an opening, 11 is an inclined surface for insertion, 12 is a lid, 13 is a support rail, 14 is a seat, 15 is a hollow rivet, 1
6 is a bolt, 17 is a busbar holding piece, 20 is an attachment part, 21 is a busbar, 22 is a rotation stop ring, 25 is a wiring device, 26 is an end face, 27 is a side face, and 28 is a spacing piece.

Claims (1)

[Scope of Claims] 1. A support device for attaching a wiring device, such as a wiring shield, a disconnector, an earth leakage disconnector, a fuse, etc. to a support rail on a busbar, which support device is attached to the busbar. A substantially flat plate-shaped base made of an insulating material is provided with a fork-shaped contact portion for each phase. This contact part is made up of two contact pieces each having a swinging fulcrum that supports each other in the center thereof,
A spring is inserted between these contact pieces above the swinging fulcrum, and a coupling conductor from this fork-shaped contact part to the edge of the stand simultaneously serves as a support for this contact piece. A support device for mounting a wiring appliance, characterized in that the coupling conductor is formed at the edge of the base and is connected to a flexible connection line to the appliance. 2. The wiring device installation according to claim 1, wherein the spring is formed in a substantially hairpin shape, and the exclusive plane of the spring is orthogonal to the exclusive plane of the fork-shaped contact portion. Support device for. 3. In the device according to claim 1, the fork-shaped contact portion has an opening slightly narrower than the width of the generatrix, and the opening is provided with the inclined surface for inserting the generatrix. Characteristic support device for installing wiring equipment. 4. A device as claimed in claim 1, characterized in that a primarily flat lid made of an insulating material supports at least one support rail. 5. In the device according to claim 4, the base and the lid are connected to each other by a plurality of hollow rivets, and a bolt having a busbar holding piece made of an insulating material attached to the end of the bolt is attached to the hollow rivet. A support device for installing a wiring device, characterized in that it is inserted through the device. 6. In the device according to claim 5, a plurality of contact portions are arranged in a stepped manner on the base, and a generatrix presser piece of an appropriate length is arranged between the contact portions, so that the presser piece At least 1 when turning the bolt to the left
1. A support device for attaching wiring equipment, characterized in that the support device is arranged so as to touch one end face of two contact parts, and to touch one side face when turned clockwise. 7. In the device according to claim 4, the support rail is constituted by a metal band fixed on the seat of the lid and whose edge is bent upward, and the space between the seat and the support rail is increased. A support device for installing wiring equipment, characterized in that a spacer piece is prepared. 8. A support device for attaching a wiring device according to any one of claims 1 to 7, wherein the base is provided with a fork-shaped attachment portion made of an insulating material. 9. The device according to claim 5, further comprising a rotation stopper ring that substantially fills the gap between the hollow rivet and the bolt.